Problem 8-5 (Algo) Various inventory costing methods [LO8-1, 8-4] [The following information applies to the questions displayed below.] A company began January with 6,000 units of its principal product. The cost of each unit is $5. Inventory transactions for the month of January are as follows: - Includes purchase price and cost of freight. 8,000 units were on hand at the end of the month. Problem 8-5 (Algo) Part 4 4. Calculate January's ending inventory and cost of goods sold for the month using Average cost, periodic system